Coarse projections of the protein-mutational fitness landscape
The extant phylogenetic variability of a given protein contains information about its underlying sequence-fitness landscape, potentially of value to ancestral reconstruction. In extracting such information, it is pertinent to focus on coarse-grained traits of sequence with strong physicochemical bearing on the protein's phenotype. This chapter uses phylogenetic data to stake out roughly the landscape for a protein component of spider silk.
Keywords: physicochemical constraints, design pressure, coarse-grained traits, genotype-phenotype mapping, phylogenetic variability, viable sequence space, deleterious sequence space
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